![Shop : Buy Sigma 120 500mm F4 5 5 6 Dg Apo Hsm Lens for Nikon Af: MAK0522/11455046 : Blue Moon Camera and Machine Shop : Buy Sigma 120 500mm F4 5 5 6 Dg Apo Hsm Lens for Nikon Af: MAK0522/11455046 : Blue Moon Camera and Machine](https://s3-us-west-2.amazonaws.com/bmc-penny-images/production/1200/08.19.50-e1e91564d1022acea639acb211a4a4a0.jpg)
Shop : Buy Sigma 120 500mm F4 5 5 6 Dg Apo Hsm Lens for Nikon Af: MAK0522/11455046 : Blue Moon Camera and Machine
![Amazon.com : Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics Amazon.com : Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics](https://m.media-amazon.com/images/I/41lKBFdh1DL._AC_.jpg)
Amazon.com : Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics
![Am I hearing things? Today I recv'd this Sigma 120-400mm 1:4.5-5.6 APO DG OS HSM lens with a Nikon mount. When in AF mode I can hear what I think are gears Am I hearing things? Today I recv'd this Sigma 120-400mm 1:4.5-5.6 APO DG OS HSM lens with a Nikon mount. When in AF mode I can hear what I think are gears](https://preview.redd.it/br379tqide051.jpg?width=640&crop=smart&auto=webp&s=24c6a590d8943177cebef82ed4b62a7942473438)